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前言在马铃薯生产中,由于进行块茎无性繁殖,易受病毒、病菌的浸染,尤其是马铃薯感染病毒后,可在块茎中逐代累加.在一般情况下,是块茎无性繁殖,因而没有自身摒除病毒的能力.随着病毒的积累,病毒病代代加重,引起种性衰退,产量锐减,直至失去种用价值. 国内许多学者研究表明,马铃薯早收留种能复壮种性,提高后代生活力和相对减轻病毒病的发生.在早收时间上,贵州郭麟书研究认为,在该省海拔2200米地区以终花期留种为宜.但是,早收留种在我省(尤其在
Introduction In potato production, due to vegetative propagation of tubers, it is susceptible to viruses and pathogenic bacteria, especially after the potato is infected with virus, it can be accumulatively accumulated in the tubers. In general, the tubers are vegetatively cloned and thus have no self-exclusion virus With the accumulation of the virus, the virus disease on behalf of the increase, causing recession, production dropped sharply, until the loss of species value.Many scholars have shown that the recovery of early seed potato species can be re-seed to enhance the viability of future generations and Relatively reduce the occurrence of viral disease.In the early harvest time, Guizhou Guo Lin book that in the province 2200 meters above sea level in the final flowering to stay species is appropriate, but early collection species in our province (especially in